Improvement in window-screens



F. A. GILBERT WINDOW-SCREEN.

Patented July 10,1877.

N.PETER5. PNOTD LlTHOGRAPNER WASHINGTON, D, C.

U ITED STATES PATENT O EIcE.

FREDERICK A. GILBERT, OF NEW ,HAVEN,OONNEOTIOUT.

IMPROVEMENT IN WINDOW-SCREENS.

Specification forming part of Letters Patent No. 192,982, dated July 10, 1877; application fu'led May 7, 1877.

To all whom it may concern Be it known that I, FREDERICK A. GTL- BERT, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Window Screens; and, I do hereby declare the follow ing, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent in- Figure '1, an inside view; Fig. 2, a vertical section Fig. 3, a transverse section; and, in Fig. 4, the springin perspective. i

This invention relates to an improvement in window-screens, and particularly to means for adjusting the same, the object being the construction of a cheap spring for adjusting the screen to different elevations.

The invention consists in a spring-latch for holding the screen at difierent elevations, and constructed as shown and hereinafter described.

The screen-frame is made of the usual form, with the top bar A, lower bar B, and sides 0 D. The outer edge of the sides is grooved vertically so as to set onto a rib, d, on the window-jamb, as seen in Fig. 3. i

The spring-latch is cut from elastic sheet metal into the required form, as seen in Fig. 4, one end of the body E turned inward, as atf, so as to be driven into the edge of the screen, as seen in Fig.2. The upper end is turned outward at right angles, as at h, and extends inward to form a convenient fingerpiece, 13, by which to operate the spring, the finger-piece t extending to the inside of the screen, as seen in Fig. 1.

and the elasticity of the body tends to throw the projection h outward into a notch providedfor itin the side of the frame, as seen in Fig. 1, so as to lock the screen atany desired point. This construction of spring is simple, and produced at a trifling cost.

I claim+- The herein-described spring or holder for window-screens, consisting of the body E, one end, f, turned inward as a means for securing the spring, the upper edge It turned outward to form the locking-projection, and the finger-piece t, all constructed from a single piece ofsheet metal, substantially as described.

' FRED. A. GILBERT.

. The body E lies in the groove of the screen,

Witnesses:

J. H. SHUMWAY, CLARA BROUGHTON. 

